Buyng and fitting a dro to sieg sx2 mill

Cogsy · Mar 8, 2017

bazmak said:
Has anyone changed the feedscrews to ball screw without CNCing it
Just a thought,is it feasible and/or worthwhilehttp://s1327.photobucket.com/user/bazmak47/media/finish 01_zpsovnhdqgr.jpg.html http://s1327.photobucket.com/user/bazmak47/media/finish 02_zpszxqakmrn.jpg.html

I don't know if anyone has done it, but I don't see the point in you doing it. Basically all you'd be doing was eliminating/greatly reducing backlash but with your DRO you don't need to worry about backlash at all - you can hit your exact numbers without concerning yourself with how much the dials are turning at all.

Blogwitch · Mar 9, 2017

Very nice setup you now have Baz, I hope it gives you many years of trouble free machining, just as mine have.

As Al says above, ball screws are bit of an overkill and the amount of machining and fitting required doesn't really justify fitting them.

Backlash is taken care of by the use of DRO's, in fact I never use my handle scales any more, there is no need to. But that doesn't mean you should ignore large cases of backlash, when it does start to get to fairly large limits, then you really do need to adjust the screws and nuts, it is just good engineering practice so preventing other problems.

Nice one

John

mechman48 · Apr 16, 2017

Hi Bazmak.
I have fitted dro's to my Mill & the type I have fitted are the magnetic type with remote readout from ArcEuro ( usual disclaimer)...

http://www.arceurotrade.co.uk/Catal...al-Readout-Bars-with-Dedicated-Remote-Display

I have used cheapo digital tyre depth indicators for my lathe, (like you a tight Yorkshireman) attached with neodymium magnets, on the saddle & X slide & a cheapo vernier calliper, attached by the same method, to my tailstock works well for me, pics in my album... DRO fitting.

George.

bazmak · Apr 16, 2017

Very nice.I also thought long and hard on the magnetic ones
but finally went for glass.Dont know how I managed without them
Glad I went for the cheaper 5micron ones.When I use the imperial the last 2 digits don't half jump about.Hate to think what the 1 micron ones do

Blogwitch · Apr 16, 2017

I am sorry to pop your bubble George, but they are not magnetic scales but digital scales that work in the same way as your hand help digital measuring units and your tyre depth gauge. All they do is to give you a remote display rather than one on the scale itself.

You need to protect them as much as possible from swarf or liquids otherwise they will start to fail on you, unlike the correct magnetic scale which seem impervious to debris and moisture.

Baz, unless you are going to fit a scale to say a surface grinder, where you can use the finer tolerances then almost anywhere else won't benefit at all from 1um scales, and even then you have to have a vibration reducing display head to make use of them. I am going to be using one such head, but with 5um scales as I am quite happy grinding to 2 tenths, but I don't want the jump about you sometimes get with a standard display head.

John

mechman48 · Apr 17, 2017

Blogwitch said:
I am sorry to pop your bubble George, but they are not magnetic scales but digital scales that work in the same way as your hand help digital measuring units and your tyre depth gauge. All they do is to give you a remote display rather than one on the scale itself.

You need to protect them as much as possible from swarf or liquids otherwise they will start to fail on you, unlike the correct magnetic scale which seem impervious to debris and moisture.

John

No Probs, comments noted.

I have gone some way to protect the DRO's which I haven't shown in previous pics...
The 'Y' axis has a plastic splash screen over it to prevent any oil drips from the 'X' axis leadscrew, (no pic to date). Both have served well in their positions & they have been on the machine since 2013 & all I've had to do is change batteries... & they have lasted for some time, so my set up works fine for me as it is. I would like to have glass scales & display head but being on a flat rate pension, finances prevent it, but thanks for your comments anyway :thumbup:.

Buyng and fitting a dro to sieg sx2 mill

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